The TV income is not calculated weekly, it is per season based on the strength of the league. The TV income among div I leagues around the world differ quite a lot. The fluctuation is smaller across div II leagues in a single nation, but the money is not the same for everyone.
OK, so the only thing that is needed to be changed in that case is to calculate it weekly, due to the huge fluctuation on salaries during a season.
What you did not say, is how this calculation is computed. On which parameters?
If it is on the average salaries on that division, than this is what should be.